公开(公告)号：US08548485B2

公开(公告)日：2013-10-01

申请号：US12731834

申请日：2010-03-25

申请人： Valentin Alexandru Gheorghiu ,  Ravi Palanki ,  Naga Bhushan

发明人： Valentin Alexandru Gheorghiu ,  Ravi Palanki ,  Naga Bhushan

IPC分类号： H04W74/00

CPC分类号： H04L1/0026 ,  H04L1/0002 ,  H04L1/0021 ,  H04L1/0029 ,  H04L1/1671 ,  H04L2001/0093

摘要： Systems and methods are provided for adaptively transmitting information to a plurality of nodes in a local area of a base station. The base station receives channel quality information from one or more of the nodes within the local area, selects a transmission rate for a downlink transmission corresponding to the lowest channel qualities, and simultaneously transmits a message to the nodes at the selected transmission rate.

摘要翻译： 提供了用于将信息自适应地传送到基站的局部区域中的多个节点的系统和方法。 基站从局域内的一个或多个节点接收信道质量信息，选择对应于最低信道质量的下行链路传输的传输速率，同时以选定的传输速率向节点发送消息。

公开(公告)号：US08498647B2

公开(公告)日：2013-07-30

申请号：US12547395

申请日：2009-08-25

申请人： Alexei Y. Gorokhov ,  Siddhartha Mallik ,  Naga Bhushan ,  Alan Barbieri

发明人： Alexei Y. Gorokhov ,  Siddhartha Mallik ,  Naga Bhushan ,  Alan Barbieri

IPC分类号： H04W40/00

CPC分类号： H04W24/02 ,  H04B7/024 ,  H04B17/382

摘要： Systems and methodologies are described that facilitate dynamically forming clusters in a wireless communication environment. A set of non-overlapping clusters can be formed dynamically over time and in a distributed manner. Each of the clusters can include a set of base stations and a set of mobile devices. The clusters can be yielded based upon a set of local strategies selected by base stations across the network converged upon through message passing. For example, each base station can select a particular local strategy as a function of time based upon network-wide utility estimates respectively conditioned upon implementation of the particular local strategy and disparate possible local strategies that can cover the corresponding base station. Moreover, operation within each of the clusters can be coordinated.

摘要翻译： 描述了促进在无线通信环境中动态形成集群的系统和方法。 一组不重叠的簇可以随着时间和分布式动态地形成。 每个群集可以包括一组基站和一组移动设备。 可以基于通过基站通过消息传递收敛的网络选择的一组局部策略来产生群集。 例如，基于分别基于特定局部策略的实施和可覆盖相应基站的不同的可能的局部策略的网络范围的效用估计，每个基站可以选择作为时间的函数的特定局部策略。 此外，可以协调每个群集内的操作。

公开(公告)号：US08493958B2

公开(公告)日：2013-07-23

申请号：US11676925

申请日：2007-02-20

申请人： Rashid Ahmed Akbar Attar ,  Naga Bhushan

发明人： Rashid Ahmed Akbar Attar ,  Naga Bhushan

IPC分类号： H04J3/24

CPC分类号： H04L5/1438 ,  H04B7/0452 ,  H04B7/0626 ,  H04B7/063 ,  H04B7/0639 ,  H04J13/0044 ,  H04L1/0002 ,  H04L1/0025 ,  H04L1/0028 ,  H04L1/06 ,  H04L1/1671 ,  H04L1/1812 ,  H04L5/0026 ,  H04L5/0048 ,  H04L5/023 ,  H04L25/0204 ,  H04L25/0206 ,  H04L25/0226 ,  H04L27/2613 ,  H04W28/06 ,  H04W28/18 ,  H04W48/08 ,  Y02D70/1222 ,  Y02D70/1224 ,  Y02D70/1242 ,  Y02D70/1262 ,  Y02D70/144 ,  Y02D70/23 ,  Y02D70/24 ,  Y02D70/444

摘要： An access terminal (AT) and a data-optimized cellular communication radio network (RN) negotiate a set of packet sizes for use on a reverse link between the AT and the RN. The negotiated set of packet sizes may differ from the default set of packet sizes defined in an existing standard, such as 1xEV-DO Revisions A and B. The packet sizes in the negotiated set may be tailored to provide a good fit with an application transmitting data on the reverse link, such as a voice encoder of a voice over Internet Protocol (VoIP) application. The AT and the RN communicate using the negotiated set of packet sizes. The packet sizes of the negotiated set may be mapped to the same reverse rate indicator (RRI) channel codewords as are defined in systems operating under the standard. Packing efficiency is thus increased, and higher capacity for delay-sensitive applications is achieved.

摘要翻译： 接入终端（AT）和数据优化的蜂窝通信无线电网络（RN）协商用于在AT和RN之间的反向链路上使用的一组分组大小。 协商的分组大小集合可以与现有标准中定义的默认分组大小不同，例如1xEV-DO修订版A和B。协商集合中的分组大小可以被定制以提供与应用传输的良好匹配 反向链路上的数据，例如因特网协议语音（VoIP）应用的语音编码器。 AT和RN使用协商的数据包大小进行通信。 协商集合的分组大小可以被映射到与在标准下运行的系统中定义的相同的反向速率指示符（RRI）信道码字。 从而提高包装效率，实现延迟敏感应用的更高容量。

公开(公告)号：US08442572B2

公开(公告)日：2013-05-14

申请号：US11848865

申请日：2007-08-31

申请人： Mohammad Jaber Borran ,  Aamod Khandekar ,  Alexei Gorokhov ,  Tingfang Ji ,  Naga Bhushan ,  Xin Zhang ,  Arumugam Chendamarai Kannan

发明人： Mohammad Jaber Borran ,  Aamod Khandekar ,  Alexei Gorokhov ,  Tingfang Ji ,  Naga Bhushan ,  Xin Zhang ,  Arumugam Chendamarai Kannan

IPC分类号： H04B7/185 ,  H04B7/00

CPC分类号： H04W24/02 ,  H04W52/16 ,  H04W52/243 ,  H04W52/44

摘要： Systems and methodologies are described that provide techniques for performing adjustments for delta-based power control and interference management in a wireless communication system. A terminal can utilize one or more delta-based power control techniques described herein upon engaging in a reverse link transmission after a predetermined period of silence or after receiving indications of interference from neighboring access points. A delta value can be computed through open-loop projection, based on which transmission resources such as bandwidth and/or transmit power can be increased or decreased to manage interference caused by the terminal. A delta value, other feedback from the terminal, and/or indications of interference caused by the terminal can also be communicated as feedback to a serving access point to allow the access point to assign transmission resources for the terminal.

摘要翻译： 描述了提供用于在无线通信系统中执行基于增量的功率控制和干扰管理的调整的技术的系统和方法。 在预定的静默期之后或在接收到来自相邻接入点的干扰的指示之后，终端可以利用本文所述的一个或多个基于增量的功率控制技术参与反向链路传输。 可以通过开环投影来计算增量值，基于可以增加或减少诸如带宽和/或发射功率的传输资源来管理由终端引起的干扰。 来自终端的增量值，其他反馈和/或由终端引起的干扰的指示也可以作为反馈传送到服务接入点，以允许接入点为终端分配传输资源。

公开(公告)号：US08417252B2

公开(公告)日：2013-04-09

申请号：US12580139

申请日：2009-10-15

申请人： Ravi Palanki ,  Alexei Y. Gorokhov ,  Naga Bhushan

发明人： Ravi Palanki ,  Alexei Y. Gorokhov ,  Naga Bhushan

IPC分类号： H04W72/00

CPC分类号： H04W24/00 ,  H04B17/24 ,  H04B17/345 ,  H04J11/0053 ,  H04L1/0026 ,  H04L1/0028 ,  H04L1/02 ,  H04L5/0023 ,  H04L5/0035 ,  H04L2001/0092 ,  H04W72/0426 ,  H04W72/085 ,  Y02D70/1222 ,  Y02D70/1242 ,  Y02D70/1262 ,  Y02D70/142 ,  Y02D70/146

摘要： Systems and methodologies are described herein that facilitate interference measurement and reporting in a network multiple-in-multiple-out (N-MIMO) communication system. As described herein, a network device can measure and report interference corresponding to network nodes outside a designated set of nodes that can cooperatively serve the device. Respective interference reports can additionally identify dominant interfering nodes, correlation between transmit antennas of respective nodes, or the like. Subsequently, respective interference reports can be combined with per-node channel information to manage coordination and scheduling across respective network nodes. As further described herein, interference from a network node can be measured by observing reference and/or synchronization signals from the network node. To aid such observation, respective non-interfering network nodes can define null pilot intervals in which transmission is silenced or otherwise reduced. As additionally described herein, loading information broadcasted by respective interfering network nodes can be identified and utilized in connection with interference calculation.

摘要翻译： 本文描述了促进网络多输入多输出（N-MIMO）通信系统中的干扰测量和报告的系统和方法。 如本文所述，网络设备可以测量和报告对应于可以协作地服务于设备的指定节点集合之外的网络节点的干扰。 相应的干扰报告可以另外识别主要干扰节点，相应节点的发射天线之间的相关性等。 随后，各个干扰报告可以与每个节点的信道信息组合以管理跨各个网络节点的协调和调度。 如本文进一步描述的，可以通过观察来自网络节点的参考和/或同步信号来测量来自网络节点的干扰。 为了帮助这种观察，相应的非干扰网络节点可以定义空导频间隔，其中传输被静音或以其他方式减少。 如本文另外描述的，可以结合干扰计算来识别和利用由各个干扰网络节点广播的加载信息。

公开(公告)号：US08412222B2

公开(公告)日：2013-04-02

申请号：US12490078

申请日：2009-06-23

申请人： Avneesh Agrawal ,  Alexei Y. Gorokhov ,  Mehmet I. Gurelli ,  Naga Bhushan ,  Parag A. Agashe

发明人： Avneesh Agrawal ,  Alexei Y. Gorokhov ,  Mehmet I. Gurelli ,  Naga Bhushan ,  Parag A. Agashe

IPC分类号： H04B1/00

CPC分类号： H04L1/1692 ,  H04L1/0026 ,  H04L1/1671 ,  H04L1/1861 ,  H04L1/1887 ,  H04L2001/0093

摘要： Techniques for supporting broadcast/multiple transmission to multiple terminals with feedback and rate adaptation are described. In an aspect, a combination of HARQ and at least one shared feedback channel may be used to support broadcast/multicast transmission. In one design, a base station may send at least one transmission of a packet to multiple terminals, one transmission at a time. The base station may receive feedback information (e.g., NAK) for the packet from the terminals on the shared feedback channel(s). The base station may determine whether to terminate the packet early and/or may select at least one transmission parameter for another packet based on the feedback information for the packet. In another aspect, a transport format for a broadcast/multicast transmission may be selected based on CQI information from terminals receiving the transmission. The terminals may send CQI information at a slow rate and/or only certain terminals may send CQI information.

摘要翻译： 描述了用于支持具有反馈和速率适配的多个终端的广播/多传输的技术。 在一方面，可以使用HARQ和至少一个共享反馈信道的组合来支持广播/多播传输。 在一种设计中，基站可以向多个终端发送分组的至少一个传输，一次发送一个。 基站可以从共享反馈信道上的终端接收针对分组的反馈信息（例如，NAK）。 基站可以基于分组的反馈信息来确定是否提前终止分组和/或可以针对另一分组选择至少一个传输参数。 在另一方面，可以基于接收到传输的终端的CQI信息来选择用于广播/多播传输的传输格式。 终端可以以慢速率发送CQI信息和/或仅某些终端可以发送CQI信息。

公开(公告)号：US08401033B2

公开(公告)日：2013-03-19

申请号：US12722290

申请日：2010-03-11

申请人： Ravi Palanki ,  Naga Bhushan ,  Aamod D. Khandekar ,  Ashwin Sampath ,  Raja S. Bachu

发明人： Ravi Palanki ,  Naga Bhushan ,  Aamod D. Khandekar ,  Ashwin Sampath ,  Raja S. Bachu

IPC分类号： H04L12/43 ,  H04W24/00

CPC分类号： H04W48/08

摘要： Systems, apparatus, methods and computer program products for facilitating collision detection are provided. In some embodiments, a method can include: receiving identifying information during one or more time intervals from a plurality of base stations; determining whether at least two different values of the identifying information from the plurality of base stations have been transmitted during the same time interval; and determining that a collision has occurred between at least two of the plurality of base stations in response to determining that the at least two different values of the identifying information from the plurality of base stations have been transmitted during the same time interval.

摘要翻译： 提供了用于促进碰撞检测的系统，装置，方法和计算机程序产品。 在一些实施例中，一种方法可以包括：在多个基站的一个或多个时间间隔期间接收识别信息; 确定在所述相同时间间隔期间是否已经发送了来自所述多个基站的识别信息的至少两个不同值; 以及响应于确定来自所述多个基站的所述识别信息的所述至少两个不同值已经在相同的时间间隔期间被发送，确定在所述多个基站中的至少两个基站之间发生冲突。

公开(公告)号：US08305999B2

公开(公告)日：2012-11-06

申请号：US11969200

申请日：2008-01-03

申请人： Ravi Palanki ,  Alexei Gorokhov ,  Aamod Khandekar ,  Naga Bhushan

发明人： Ravi Palanki ,  Alexei Gorokhov ,  Aamod Khandekar ,  Naga Bhushan

IPC分类号： H04B7/216

CPC分类号： H04W72/04 ,  H04B1/692 ,  H04B1/7143 ,  H04L5/0012 ,  H04L5/0023 ,  H04L5/0037 ,  H04L5/0055 ,  H04L27/0008

摘要： Techniques for allocating and mapping resources in a wireless communication system are described. The system may use hop-ports to facilitate allocation and use of subcarriers. In one aspect, the hop-ports may be partitioned into multiple subzones, with each subzone including a configurable number of hop-ports. The hop-ports within each subzone may be permuted or shuffled based on a permutation function. After permutation, the hop-ports in all subzones may be mapped to the subcarriers based on local or global hopping. In another aspect, a set of hop-ports may be mapped to a set of subcarriers. A hop-port may be mapped to an unavailable subcarrier and may then be remapped to another available subcarrier. In yet another aspect, a set of hop-ports may be mapped to a set of subcarriers distributed (e.g., evenly) across all subcarriers but avoiding subcarriers in a reserved zone.

摘要翻译： 描述了用于在无线通信系统中分配和映射资源的技术。 系统可以使用跳转端口来促进子载波的分配和使用。 在一个方面，跳跃端口可以被划分成多个子区域，每个子区域包括可配置数量的跳接口。 基于置换功能，每个子区域内的跳转口可以被排列或混洗。 在排列之后，所有子区域中的跳跃端口可以基于本地或全局跳频映射到子载波。 在另一方面，一组跳跃端口可以映射到一组子载波。 跳跃端口可以被映射到不可用的子载波，然后可以重新映射到另一个可用的子载波。 在另一方面，一组跳跃端口可以被映射到跨所有子载波分布（例如，均匀）但是避开保留区域中的子载波的一组子载波。

公开(公告)号：US08305943B2

公开(公告)日：2012-11-06

申请号：US11748878

申请日：2007-05-15

申请人： Aamod Khandekar ,  Naga Bhushan

发明人： Aamod Khandekar ,  Naga Bhushan

IPC分类号： H04L5/14

CPC分类号： H04B7/2656 ,  H04B7/2628

摘要： Systems and methodologies are described that provide half-duplex communication in a frequency division duplex (FDD) system. Communications in an FDD system may be divided into half-duplex interlaces, wherein a terminal may receive at one time period and transmit at another time period. An access network in an FDD system may then utilize half-duplex communication to communicate with an access terminal that is not capable of transmitting and receiving simultaneously by using a half-duplex interlace. Further, an access network may also utilize full-duplex communication to communicate with an access terminal that is capable of transmitting and receiving simultaneously.

摘要翻译： 描述了在频分双工（FDD）系统中提供半双工通信的系统和方法。 FDD系统中的通信可以被划分为半双工交错，其中终端可以在一个时间段接收并在另一时间段进行发送。 然后，FDD系统中的接入网络可以利用半双工通信来与不能通过使用半双工交错同时进行发送和接收的接入终端进行通信。 此外，接入网络还可以利用全双工通信来与能够同时发送和接收的接入终端进行通信。

公开(公告)号：US08248938B2

公开(公告)日：2012-08-21

申请号：US10997271

申请日：2004-11-24

申请人： Jean P. L. Au ,  Rashid A. Attar ,  Naga Bhushan

发明人： Jean P. L. Au ,  Rashid A. Attar ,  Naga Bhushan

IPC分类号： G08C1/00

CPC分类号： H04L1/1819

摘要： A communication system (100) transmits data packets from a sender (120A) to a receiver (130A) using hybrid automatic repeat request processes. The sender redundantly encodes each packet, divides the packet into subpackets, and sends the subpackets to the receiver in a time-interlaced manner. When the receiver returns a positive acknowledgement of a subpacket using an acknowledgement channel, the sender terminates transmission of the subpackets. The sender interprets the signals on the acknowledgement channel using a metric resulting from correlation of the signals with positive and negative acknowledgement symbols. The sender interprets low correlation of the acknowledgement channel signal with both positive and negative acknowledgement symbols as a preamble miss, and terminates transmission of the subpackets. After termination, the packet may be rescheduled for transmission. Early termination of packet transmission after a preamble miss improves bandwidth utilization and decreases latency of the packet with the missed preamble.

摘要翻译： 通信系统（100）使用混合自动重复请求处理将数据分组从发送方（120A）发送到接收方（130A）。 发送方对每个数据包进行冗余编码，将数据包划分为子数据包，并以时间间隔方式将子数据包发送给接收方。 当接收方使用确认信道返回子包的肯定确认时，发送方终止子数据包的传输。 发送者使用由信号与正和负确认符号的相关产生的度量来确认确认信道上的信号。 发送方解释确认信道信号与正和负确认符号的低相关性作为前导码缺失，并终止子分组的传输。 终止之后，可以重新安排分组以进行传输。 前导码丢失后的数据包传输的提前终止提高了带宽利用率并降低了丢失前导码的数据包的等待时间。